mirror of https://gerrit.osmocom.org/asn1c
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*-
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* Copyright (c) 2003 Lev Walkin <vlm@lionet.info>. All rights reserved.
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* Redistribution and modifications are permitted subject to BSD license.
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*/
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#include <BMPString.h>
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/*
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* BMPString basic type description.
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*/
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static ber_tlv_tag_t asn1_DEF_BMPString_tags[] = {
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(ASN_TAG_CLASS_UNIVERSAL | (30 << 2))
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};
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asn1_TYPE_descriptor_t asn1_DEF_BMPString = {
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"BMPString",
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asn_generic_no_constraint, /* No constraint by default */
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OCTET_STRING_decode_ber, /* Implemented in terms of OCTET STRING */
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OCTET_STRING_encode_der, /* Implemented in terms of OCTET STRING */
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BMPString_print,
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OCTET_STRING_free, /* -//- */
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0, /* Use generic outmost tag fetcher */
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asn1_DEF_BMPString_tags,
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sizeof(asn1_DEF_BMPString_tags)
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/ sizeof(asn1_DEF_BMPString_tags[0]),
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1, /* Single UNIVERSAL tag may be implicitly overriden */
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-1, /* Both ways are fine */
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0 /* No specifics */
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};
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/*
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* BMPString specific contents printer.
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*/
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int
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BMPString_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel,
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asn_app_consume_bytes_f *cb, void *app_key) {
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const BMPString_t *st = (const BMPString_t *)sptr;
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uint16_t *wchar;
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uint16_t *wend;
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char scratch[128]; /* Scratchpad buffer */
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char *p;
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(void)td; /* Unused argument */
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(void)ilevel; /* Unused argument */
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if(!st || !st->buf) return cb("<absent>", 8, app_key);
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wchar = (uint16_t *)st->buf;
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wend = (uint16_t *)(st->buf + st->size);
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for(p = scratch; wchar < wend; wchar++) {
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uint16_t wc = (((uint8_t *)wchar)[0] << 8)
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| ((uint8_t *)wchar)[1]; /* 2 bytes */
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if(sizeof(scratch) - (p - scratch) < 3) {
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if(cb(scratch, p - scratch, app_key))
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return -1;
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p = scratch;
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}
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if(wc < 0x80) {
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*p++ = (char)wc;
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} else if(wc < 0x800) {
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*p++ = 0xc0 | ((wc >> 6));
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*p++ = 0x80 | ((wc & 0x3f));
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} else {
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*p++ = 0xe0 | ((wc >> 12));
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*p++ = 0x80 | ((wc >> 6) & 0x3f);
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*p++ = 0x80 | ((wc & 0x3f));
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}
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}
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return cb(scratch, p - scratch, app_key);
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}
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